nvchris Posted June 15, 2010 Report Share Posted June 15, 2010 Got out with a good friend this past weekend to do a bit of testing.We went to a patch that has produced both shallow and deep nuggets and almost zero trash. Both units were fitted with the same coils. 12" round mono. This Northern Nevada location is next to an ancient inland sea, bedrock is limestone, soil is very alkaline. Salt was mined nearby.GPX vs TDI. We all know that the TDI was not made to compete with a GP. It's offered as a worthy alternative at less the half the price. The method we agreed upon was that we would both hunt for targets then mark them with orange flagging.After three hours of hunting TDI 4 targets, GPX 9 targets.Then we crossed checked targets GPX all of the TDI's targets, TDI 3 of the GPX's targets.Then we dug. 3 of the TDI targets were sub gram nuggets @ less then 5 inches 1 was a bit of copper from a 22 slug near surface.Of the 6 targets that the TDI did not hit on all were gold (except 2 more tiny surface 22 lead bits) that were 9" + in depth average size .7 gram the three the TDI did hit on all were less than 6" deep and averaged .4 gram.FYI the TDI operator has used Fosters designs since the GS2. All in all it was a great day I got to try out the TDI and can attest to it's ability to find gold. While it cant match the GPX's depth ( and rock steady threshold ) it's a very capable PI detector.So at less the half the price it found less then half the gold then the GPX. Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.